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JLW w AM. PHOTO-LITHDGRAFHIG co. Mflmwwsls PIPQCESS) UNITE STATES CHARLES W. GLIDDEN, OF LYNN, ASSIGNOR TO JAMES W. BR TRUSTEE, OF BOSTON, MASSACHUSETTS.

IMPROVEMENTIN MACHINES FOR FORMENG BOOT-HEEL Specification forming part of Letters Patent No. 138,63, dated May 6, 1873; applicati April 2, 1873.

To all whom it may concern:

Be it known that 1, CHARLES W. GLIDDDEN, of Lynn, in the county of Essex and State of Massachusetts, have invented an Improvement in the Manufacture of Boot-Heels; and I do hereby declare that the following, taken in connection with the drawing which accompanies and forms a part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

My present invention relates to a new method of shaping the peripheral or curved edge surface of those boot-heels which are made up of layers or lifts, the respective lifts for a heel being each cut to an approximation of its size in accordance with the position it is to occupy in the finished heel, and such lifts being then assembled in accordance with their respective sizes and united by tacks or other fastenings sufficiently to hold them together to form a heelblank. The curved edges of such lifts jut out in step-like form, one beyond another, and they are generally trimmed off to impart a regular form. In my invention I rub down the edges until they merge and form one curved surface, the operation of rubbing not only bringingthe edge of the heel to the required shape for a finished heel, but solidifying, conipacting, and hardening the curved surface of the heel. To effect this I roll the edges by means of a wheel, the heel-blank being clamped in position and the wheel and heel occupying such relative positions and having such relative movements that, by bringing the whole length of curved edge to the action of the wheel, the several lift-edges are rolled down until they, by pressure, are brought to one uniform surface. The invention consists, primarily, in this method of shaping heel edges by the rolling pressure of a wheel or wheels.

The drawing represents a machine embodyin g my construction.

Figure 1 shows the machine in side elevation. Fig. 2 is a sectional plan on the line as :0.

(0 denotes the frame of the machine. I) is a vertical spindle, extending through a block or boss, 0, and having fixed on its top a plate, d. At the foot of the spindle is a bevel-gear, 6, into which meshes a bevel-gear, f, on a horithe heel edge. At the inner en FATENT OF OKS,

zontal driving-shaft, g, rotation o the shaft g effecting rotation of the plate d. From the center of the plate d a vertical p t, it, rises, this post being slotted, and havi :9; a screw,

t, working through a nut-thread I the headof the post down into the slot. n the foot of the screw is a block, 70, sliding. y the slot and guided by it, and fr opposite ends of this block extend two claf p-plates, l. The top of the plate at is made wit u e=at-pieces or surfaces m, and between each 1 'ece m and the clamp-plate 1, above it, the he blank n is placed, the breast of the blank gainst the post. By turning down the screw he clamps l are forced down, and clamp a h 1 between each plate I and the faces on of An elastic washer, 0, may be pla each plate 1 and the ear, extendi from the block In, to which the plate is fas ned, these washers permitting the respectiv plates 1 to accommodate themselves to slight ll equalities in the thickness of dilferent heel-bl nks. Each face 112 may be slightly chamferedi t its edge, as seen at p, to enable the compr sed lifts to move upward at their edges, ther y forming the hollow or concave heel-seat. he edge of each piece m constitutes a patter or guiding and controlling the extent of pre ure of the Wheel. q denotes the edge-sha ing wheel. This wheel is preferably formed itli peripheral teeth or serrations, and it turn on a pin, r, extending through its center, the. in extending from a block, .9, made fast up I a shaft, t, extending through a slide or carri. e, a, which slides onaguide-rail, c. The carria eispressed toward the heelblanks by a suit 1e spring, 20, to bring the wheel against the lges of the respective blanks as the plate 1 is rotated. Upon the end of the shaft t is arm, 00, in which is a curved slot, y, a clampin, 2, passing through the slot. By means of the slot and pin the wheel is tipped so as 0 bring its edge in proper position to form I taper of of the carriage u is a guide-roll, j, and as t 1 wheel by its pressure condenses the lift-ed es this roll finally reaches and rolls against he curved pattern-edge of the plate, thereby etermining the extent of inward movement 0 the leather by the pressure of the wheel and he form to be imparted to the curved heel edge or surface. The wheel turns by friction of the ro tating lift-edges against it and the carriage yields back and moves forward in accordance with the form of the heel-blanks and their position in relation to the center of rotation of the frame in which they are clamped.

The wheel may be arranged to rotate around the heel-blanks, they being held stationary; but it will be obvious that the arrangement shown is the preferable one.

By making the Wheel with the peripheral serrations the lift-edges more readily yield as the teeth act intermittently or upon intermitted spaces.

I claim- 1. In combination with a clamp for holding an assemblage of heel-lifts, a wheel operating to compress the heel lift-edges and shape the heeLedge, substantially as described.

2. In combination with the clamp, the wheel having the peripheral serrations, substantially as described.

5. The improved mode of shaping the edges 7 of boot and shoe heels, consisting in subjectin g the edges of the lifts to the rolling pressure of a wheel, by means substantially as described.

Executed this 15th day of March, A. D.

O. \V. GLIDDEN.

Witnesses:

FRANCIS GOULD, M. W. FROTHINGHAM. 

